p.11

11

Grasses are arranged in three grand divisions, which are divided into 13 different tribes. The tribes are large groups of grasses having some very general resemblances.

These again are divided into genera or families, each made up of one or more species. Some discussion has arissen among naturalists as to the proper limit to be assigned to the species. Some confine the species to very narrow limits of variation and make new species [of every] very small variations from the original type. Others allow a very considerable departure from the selected form to exist within the range of a species, and dividing the species into varieties.

As familiar examples winter and spring wheat are two varieties of one species, which have been separated & described as if they were two different plants or species (Triticum hyernall & T. aestureon) But the Egyptian wheat (with a plurality of heads) the [spelt?] &c are different species of the genus or family Triticum or wheat.

Wheat, Barley, [Oats], and several genera of wild grasses of similar general character are grouped together to form the Hordineae or Barley Tribe.-So of other allied families of grasses.-

11

Grasses are arranged in three grand divisions, which are divided into 13 different tribes. The tribes are large groups of grasses having some very general resemblances.

These again are divided into genera or families, each made up of one or more species. Some discussion has arissen among naturalists as to the proper limit to be assigned to the species. Some confine the species to very narrow limits of variation and make new species [of every] very small variations from the original type. Others allow a very considerable departure from the selected form to exist within the range of a species, and dividing the species into varieties.

As familiar examples winter and spring wheat are two varieties of one species, which have been separated & described as if they were two different plants or species (Triticum hyernall & T. aestureon) But the Egyptian wheat (with a plurality of heads) the [spelt?] &c are different species of the genus or family Triticum or wheat.

Wheat, Barley, [Oats], and several genera of wild grasses of similar general character are grouped together to form the Hordineae or Barley Tribe.-So of other allied families of grasses.-